supervisor环境变量

• 场景：supervisor启动flask失败，手动python启动成功，报错信息是缺少ModuleNotFoundError

• 配置文件：

[program:aib-humanpose]
environment=PYTHONPATH=/root/anaconda3/lib/python3.6/site-packages
command=/root/anaconda3/bin/python gateway_b_human_pose.py
directory=/ChainDevOps/lyq/AiVideoServiceEngine/src               ; directory to cwd to before exec (def no cwd)

stopsignal=INT               ; signal used to kill process (default TERM)

stdout_logfile=/data/log/supervisor/aib-humanpose.out.log   ; stderr log path, NONE for none; default AUTO
stdout_logfile_maxbytes=4GB   ; max # logfile bytes b4 rotation (default 50MB)
stdout_logfile_backups=10     ; # of stdout logfile backups (default 10)

stdout_events_enabled=true   ; emit events on stdout writes (default false)

stderr_logfile=/data/log/supervisor/aib-humanpose.err.log   ; stderr log path, NONE for none; default AUTO
stderr_logfile_maxbytes=1GB   ; max # logfile bytes b4 rotation (default 50MB)
stderr_logfile_backups=10     ; # of stderr logfile backups (default 10)

stderr_events_enabled=true   ; emit events on stderr writes (default false)

startsecs=20

• startsecs启动时间
  曾经试过tomcat的启动时间过短，内存不够，于是增加启动时间试试
  结果：不是这个

• environment环境
  supervisor运行python的环境和sh的不一样

验证1-py文件，脚本中执行

import sys
print(sys.path)

验证2-supervisor配置文件

[program:test_python3]
command=/usr/local/bin/python3 /home/hunter/test.py
user=hunter
environment=AIRFLOW_HOME="/home/hunter/airflow"

• 解决问题
  python通过PYTHONPATH环境变量初始化sys.path，因此需要在编写supervisor配置文件时将指定PYTHONPATH，在PYTHONPATH中添加/home/sctele/.local/lib/python3.6/site-packages便可以在sys.path中添加需要的路径。

environment=PYTHONPATH=/root/anaconda3/lib/python3.6/site-packages

对于用户python路径（pip install XXX --user安装的位置）(~/.local)，也可以通过指定HOME来让python找到模块所在的路径：
environment=HOME=/home/hunter